Four gunmen open fire in Pakistan’s cultural capital, Lahore. When police return fire the men detonate a car bomb near the city’s main intelligence agency, killing 30, wounding more than 150, and flattening the police building. Officials suspect the Taliban is behind the attack.

Mexican forces arrest 10 mayors and other officials in President Felipe Calderon’s home state of Michoacan. The operation targets politicians with ties to Mexico’s drug traffickers and organized crime networks that control much of the state. An adviser to the governor, and director of the Institute of Police are among those arrested.